280400

素因数分解:

$2^4\times 5^2\times {\mathrm{701}}^1$

素因数の和:719

約数の個数: 30

約数和(自身を含む): 674622

約数和(自身を除く): 394222

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 701, 1402, 2804, 3505, 5608, 7010, 11216, 14020, 17525, 28040, 35050, 56080, 70100, 140200, 280400]

約数ペア:

[(1, 280400), (2, 140200), (4, 70100), (5, 56080), (8, 35050), (10, 28040), (16, 17525), (20, 14020), (25, 11216), (40, 7010), (50, 5608), (80, 3505), (100, 2804), (200, 1402), (400, 701)]